/Engine/Source/Runtime/AIModule/Classes/Perception/AISense_Blueprint.h
Called when a listener unregistered from this sense. Most often this is called due to actor's death
void OnListenerUnregistered ( [AActor](API\Runtime\Engine\GameFramework\AActor) * ActorListener, [UAIPerceptionComponent](API\Runtime\AIModule\Perception\UAIPerceptionComponent) * PerceptionComponent )